I'm getting thread update email notifications with a delay of somewhere between a couple of hours and a few days. I think it started last week and I have no issues with other emails being delayed. Others experiencing the same issue?

This is still happening; it seems notification emails come in completely randomly. Sometimes I get a flurry (of old ones) at once, sometimes none for days and sometimes I get a notification email just after someone posted an update. Looks like no one else has this issue, so I'll live with it!